706 



INDEX. 



Duck, summer, 543 

 Dugong, 596 

 Dysmorphcsa, 60 



Basle, balJlieaded, 548 

 Ear, 641 



of clam, 235 



of Crustacea, 271 

 Ears of mammals, 563 

 Earwig, 844 

 Earthworm, anatomy of, 209 



embryology of, 310 

 Ecardines, 196 

 Echeneis remora, 454 

 Echidna bystrix, 573 

 Echinarachuius parma, 133 

 Echinococcus, 159 

 Echinoderes, 179 

 Echinodermata, blood system of, 

 100, 130 



characters of, 96 



direct development of, 

 114, 121, 133 



"heart" of, 100, 104 



metamorphoses of, 106, 

 112, 120 



nervous system of, 97, 

 104 



skeleton of. 97, 118 



viviparous, 110, 121, 123 



water-vascular system of, 

 99, 130 

 Echinoidea, 117, 126 

 Echinorhynchus angustatus, 166 



claviceps, 166 

 Echinorhynchus gigas, 165 

 Echinus, 117 



esculentus, 138 

 Echlurus, 304 

 Eciton, 363 

 Ectoderm, 6 

 Ectoprocta, 188 

 Educabilia, 583, 591 

 Edentata, 577, 639 



Edible Holothurians, 185 



sea-urchin, 133 

 Edwardsia, 78 

 Eel, breeding habits of, 446 



conger, 446 



sound produced by, 444 

 Eel pout, 458 

 Eggs, winter, of Crustacea, 380 



Planarians, 145 



Polyzoa, 187 



Rotatoria, 178 

 Elasmobranchii, characters of, 

 414, 463 



development of, 418 



eyes of, 417 



teeth of, 416 

 Elaps, 497, 678 

 Elasmosaurus platyurus, 513 

 Electrical eel, 450 



fish of the Nile, 449 



ray, 422 

 Elephant, 597 

 Elephas, 597 



primlgenius, 598 

 Elk, 608 

 Elytra, 352 

 Embryology, 13, 643 

 Encrinites, 101 

 Encrinus liliformis, 137 

 Endocyst, 181 

 Endoderm, 6 

 Endostyle, 199 

 Enneacaiithus obesus, 456 

 Enopla. 199 



Enteropneusta, development of. 

 300 



structure of, 199, 201 

 Entomostraca, 277, 305 

 Entoprocta, 188 

 Eohippus, 603 

 Epeira vulgaris, 348 

 Ephemera, 348 

 Epigonichthys cultellus, 408 

 Epipodium of moUusks, 238 



